Gun barrel



sept. 4,1923. 1,467,159

W. HEINE GUN BARREL Filed Jan. 5, 1921 U "b/) [T Patented Sept. 4, 1923.

UNITED STATES 1,467,159 PATENT FICE.

WILHELM HFINE, 0F ESSEN, GERMANY, ASSIGNOR TO FRIED. KRUPP AKTIENGESELL- SCHAFT, 0F ESSEN -ON -THE-RUHR, GERMANY.

GUN BARREL.

Application filed January 3, 1921. Serial'No. 434,678.

breech portion together with a slide therefor j and has for its object to provide a par' ticularly simple connection between tube, breech portion and slide.

The invention will be further described with reference to the accompanying drawing which shows by way of example, one embodiment of the subject matter of the invention and in which: f

Fig. lis a vertical longitudinal section through the parts concerned of a gun barrel i constructed according to the invention,

Figs. 2 to`7 are cross sections on lines 2 2, 3-3 4.-4, 5--5, 6 6 and 7 7, respectively of Fig. 1, looking from the right,

-. Fig. 8 is a side elevation of a detail and Fig. 9 is a sectional top View on line 9 9 in` Fig. 8.

Referring to these drawings, the gun barrel Vcomprises a tube A and a breech portion B adapted to embrace the rear end of the' i tube. Both these parts repose on a slide C serving to guide the gun barrel on the slide carrier (not shown) of the gun, said slide to this end being provided with guide ribs c1. The slide is further provided with a spur c2 (see in particular Fig. 1) adapted to connect' the slide with the recoil brake and the recuperator.

The tube is lodged close to the muzzle by means of a cylindrical surface on a correi spondingly shaped surface of a rib c3 (Figs.

1 and 2) of the slide C, andis moreover provided at this point with a depending projection al. This projection has two horizontally disposed pins a? engaging holes c4 formed in the slide. At its rear end the tube is lodged by means of a Hat surface a? (FigsQl and 3 to- 5) on a flat surface c5v of the slide which surface passes over, to the rear of the tube, by intervention of a beveled surface cs (Fig. 1) into a surface c? running in parallel to the surface c5 (Figs. 1 and 6). Opposite to the surface o6 and at a certain distance remote therefrom, there is arranged on the breech portion a bevel surface be. On the surface c7 reposes the rear end of the breech portion by means of a flatsurface b1 1). The tube A is provided at'its surface a3 with a projection a4 (Figs. 1 and 4) adapted to engage a recessv cs formed in the slide VC. Measured in the longitudinal direction of the gun barrel, the recess o8 possesses a somewhat larger dimension than the projection at. On the tube is mounted, close to its rear end an inverted U-shaped rib z5 (Figs. 1, 4t, 5) which, starting from the surface a3, eX- tends across the whole circumference of the tube and engages a correspondingly shaped recess b2 (Fig. 1) of the; thus forming together with this latter a very tical guide. The breech portion B is fitted with two depending flanges b3 (Figs. 3 to 7), adapted to embrace the slide C as far as the rearward end thereof projecting beyond the breech portion. Close to their forward end, the flanges b3 are each provided with an inwardly extending projection b4 (Figs. 1 and 3), adapted to engage an undercutportion 010 (Fig. 1) of a groove o9 (see also Fig. 3) formed in the slide. On the rearward end surface of the breech portion B there is arranged a lip .725 (Figs. 1 and 7),

corresponding to the said recess d1 and has on its one yend a plate d2. Within the plate d2 there is mounted to rotate on a pin d3 (Figs. 6, 8 and 9) a pawl E (see more particularly Fig. 9) having a handle e2 and destined to engage under the action of a spring el by means of a projection e3 either one of two notches 57, 68 disposed diametrically opposite to each other and formed in the breechv portion. The plate Z2 is provided on its edge with a recess d4 (Figs. 1 and 8) Idestined to accommodate a projection f2 (Fig.\8) -of the stop plate f1 mounted on the breech Wedge or' breech block F (Figs. l, 6 and 7).

On the parts assuming the position disclosed in the drawings, the gun barrel is secured against being lifted olii' from the slide C by means of the pins a2, the projections b4 and the lip b5. The extension 011 of the slide and the bolt D prevent a displacement of the breech portion along the slide, While the tube A is prevented from being displaced on the slide by the projection a4 and the rib a5 engaging the recess b2 of the breech portion. The plate cl2 of the bolt D assumes such a position that its recess Z4 will come to be located within the path of the projection f2 of the stop plate f1 mounted on the breech-wedge F. Hence, the breech mechanism may now be closed.

If the gun barrel is tobe takenapart, then the breech mechanism is first of all opened, so that the projection f2 will come to.V disengage the recess el* of the' plate d2. Thereupon, by raising the handle c2, the projection e3 of the pawl E is disengaged from the notch If of the breech portion and the bolt D is caused to rotate for 180". When the bolt D has assumed this position, the projection e3 of the pawl snaps into the notch b5. In this contingency the recess (Z1 of the bolt will register with the surface c7 (Fig. l) of the slide. Hereupon the gun barrel is displaced along the slide so far forward until the projection a? of the tube cornes to bear up against the front wall of the' recess e8 of the slide. Simultaneously herewith the engagement of the pins a2 with the holes c4, of the projections b4 with the undercut portions 010 of the 'grooves c, as also of the lip b5 with the recessl c comes to be'broken. As a result, both' the breech portion and the tube may now be separately lifted off from the slide.

The manner in which the gun barrel is to be mounted on the slide and the method of locking the gun barrel to the slide by means of the bolt D will require no further explanation after the foregoing description. It may be only noted that the plate (Z2, before the locked state can be attained, assumes a position in which its edge projects into the path of the projection f2 so that it thereby prevents the breech mechanism from being closed. It will thus be obvious that the gun can only be lired after the gun barrel and the slidehave been reliably interlocked.

y Claims:

l. A separatable gun barrel comprising a tube, a breech portion and a slide, easily detachable means on said tube and breech portion for connecting said tube to said` breech portion and means formed on said tube and breech portion, cooperating with means formed on said slide for securing said tube and breech portion to said slide, the inter-engagement of said connecting and securing means being solely accomplishedv by separately placing said tube and breech. portion upon said slide an-d thereafter longitudinally displacing said tube and breech portion withv respect to said slide.

2. A separatable gun barrel comprising a tube, a breech portion and a slide, means for connecting said tube to said breech portion comprising an inverted U-shaped rib formed on said tube, said breech portion being provided with a correspondingly shaped recess, means formed on said tubev and breech portion and cooperating with means formed on said slide for securingsaid tube and breech portion to said slide, the interengagement of said connecting and securing means being accomplished`- by placing said tube and breech portion upon said slide and thereafter longitudinally displacing said tube and breech portion with respect to said slide.

3. A separatable gun barrel of the class described comprising a tube, a breech portion and a slide, means carried by s aid tube and breech portion and cooperating with meansformed on saidl slidefor connecting said' tube and breech portion to said slide, the interengagement ofthe connecting means being effected by placing said tube and breech portion upon said slide and thereafter longitudinally displacing the same relatively to the slide, a' locking member adapted to prevent the displacement of said tube and breech portion relatively to said slide and means whereby the Abreech mechanism of the gun can be closed only when said locking member is in locking position.

el. A gun barrel comprising an A-tube and breech portion and a slide therefor, means for disengageably connecting said gun barrel to said slide which comprises projections carried by said gun barrel and cooperating meansA formed on said slide whereby the inter-engagement of said gun barrel andvsaid slide maybe accomplished by placing said gun barrel upon the slide andv thereafter longitudinally displacing the gun barrel relatively to the slide, a locking member carried by said gun barrel and engaging said 'slide to prevent a displacement ofthe gun barrel along the slide and a stop carried by said locking member adapted lto permit the closing of the breech mechanism only when said locking Amember is in its locking position.

The foregoing specilication signed at Essen,` Germany, this 27th day of October,

l WILHELM HEINE. In presence of# 11ans Go'rrsMANN, JOHANN Discmans. 

